Web-shortlink
设计思路
- 通过 MurmurHash 哈希算法生成短网址，需要关心哈希算法的计算速度和冲突概率
- 为了让短网址更短，可以将 10 进制的哈希值转换成 62 进制的哈希值
- 解决哈希冲突，可以搜索数据库发现冲突，修改 Murmurhash 种子，重新计算哈希值。
接口文档
1. 生成短地址
curl --location --request POST 'http://127.0.0.1:8080/api/v1/shorten' \
--header 'Content-Type: application/json' \
--data '{
"url": "https://www.google.com/",
"expiration_in_minutes": 1
}'2. 短地址还原
curl --location --request GET 'http://127.0.0.1:8080/api/v1/short_info/1tJiBJ'3. 访问短地址
curl --location --request GET 'http://127.0.0.1:8080/1tJiBJ'接口压测
wrk -t1 -c10 -d2 --script=post.lua --latency http://127.0.0.1:8080/api/v1/shortenpost.lua
wrk.method = "POST"
wrk.headers["Content-Type"] = "application/json; charset=utf-8"
wrk.body = "{\"url\":\"https://www.google.com/\",\"expiration_in_minutes\":1}"macOS 双核四线程连接本地 Redis 压测结果:
Running 2s test @ http://127.0.0.1:8080/api/v1/shorten
1 threads and 10 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 1.85ms 1.11ms 16.27ms 88.98%
Req/Sec 5.60k 1.20k 6.88k 71.43%
Latency Distribution
50% 1.59ms
75% 2.14ms
90% 2.86ms
99% 5.94ms
11699 requests in 2.10s, 2.54MB read
Requests/sec: 5568.57
Transfer/sec: 1.21MB